Grazon ® Pro

Grazon® Pro contains a combination of clopyralid and tricopyr that provides excellent control of broad-leaved dock, curled dock, creeping thistle, spear thistle and common nettle. Grazon Pro can be used for effect a large range of other weeds, a comprehensive list of which is listed below.

Use Grazon ® Pro because:

• It is one of the very few products with a label which fully endorses the use via handheld application equipment
• It is fast acting and controls a wide spectrum of weeds
  
• It moves to the roots of the target weeds ensuring high levels of long-term control
  
• Stock grazing can resume only 7 days after application (but longer if poisonous weeds such as ragwort are present)
  
• It is very good value for money
  
• It is rainfast in only 2 hours and is very safe to grass

For more information download our FREE Forage App. Available to download from the App Store or Google play now.

Or call our Technical hotline: 0800 689 8899 or e-mail: ukhotline@corteva.com

Labels

• Grazon ® Pro Label
• Grazon ® Pro Safety Data Sheet

Resources

Benefits

One solution weed control

Grazon Pro contains two powerful active ingredients: 60 g/L clopyralid and 240 g/L triclopyr. This combination provides excellent control of broad-leaved dock, curled dock, creeping thistle, spear thistle and common nettle and also has an effect on a large range of other weeds – see our weed list.

Rapid translocation

Grazon Pro is fact acting (rainfast in only two hours) and ensures high levels of long-term control because it is translocated by the plant the roots.

Grazing

Stock grazing can resume only 7 days after application (although this may be longer if poisonous weeds such as ragwort are present).

Value

Grazon Pro is very good value for money – 16 knapsacks from each litre of product when mixed in 10 litre batches.

Application advantage

It is one of very few products with a label which fully endorses the use via handheld application equipment and very safe to grass.

Application Advice

Weeds

Optimum timing of application

Common nettle

• Spray when actively growing but preferably before flowering (normally up to mid-June).

Curled dock and broad-leaved dock

• Treat in the spring when the docks are in the rosette stage up to 25 cm high or across.
• On large well-established docks, or where there is a high reservoir of seed in the soil, a second application the following year may be required

Creeping thistle

• Spray when actively growing but before flowering spikes are 15 cm high.
• Application of Grazon Pro at flowering or during seeding is likely to produce reduced levels of control.

Bramble, broom and gorse

• Spray in June-August when actively growing but before plants begin to senesce in the autumn.
• It is essential that, particularly with large bushes, all the foliage is thoroughly wetted, or incomplete kill may result.

Top tips for Grazon ® Pro:

• Peel open the label and read in fill before use.
• Use only through a knapsack or other equipment with a hand-held lance.
• The rate of application is 60 ml in 10 litres of water.
• Target weeds when they are at the right size: Actively growing with healthy leaves and pre-flowering is best. If you have topped the weeds first then wait for sufficient weed regrowth before spraying.
• Ensure your spraying equipment is properly maintained, clean and free of dirt with the nozzle(s) able to deliver a consistent and even spray. Change the nozzle(s) if needed. You can watch our series on sprayer maintenance here.
• Wear suitable protective clothing when handling and measuring the concentrate. A face shield, gloves, coveralls and rubber boots are essential. The face shield may be removed when spraying the dilute spray mixture.
• Spray until weed leaves are thoroughly wet, but stop before the spray runs off the leaves.
• Do not be tempted to spray any ragwort present with Grazon Pro as it will not control it but may make it palatable to horses and stock. This could result in a significantly increased grazing interval whist the ragwort fully recovers.
• Grazon Pro is LERAP Category B, so spray must not fall within 1 metre of the top of the bank of a flowing or static water body. Spray must be aimed away from the water.
• Keep other people and pets out of treated areas for at least 2 hours until spray has dried on the leaf.
• When spraying is finished, clean out the tank, spray lines and nozzle, making sure the washings go on a treated area. If the Grazon Pro container is empty, rinse thoroughly three times with clean water and dispose of the rinsings on the treated area.

Best use advice for spot treatment with Grazon ® Pro

• Grazon Pro is a professional use product, therefore ensure all knapsack operators have necessary PA1 and PA6 qualifications.
• Service and maintain knapsack sprayers regularly and calibrate before use.
• Fit an appropriately sized nozzle to deliver a medium to fine spray.
• Users should wear appropriate PPE when mixing and applying Grazon Pro: face shield, gloves, coveralls and rubber boots.
• Apply at the rate stated on the label – for Grazon Pro this is 60 ml in 10 L water.
• Apply chemical to dry foliage, avoid applications to disease or pest ridden targets as this will affect the efficacy of the spray.
• Spray to thoroughly wet the foliage of the target weed, but avoid application to the point of run-off.
• Do not be tempted to spray any ragwort present with Grazon Pro as it will not control it but may make it palatable to horses and stock. This could result in a significantly increased grazing interval whist the ragwort fully recovers.

Need more information?

If you have a question, or would like to learn more about Grazon Pro application, check out our helpful resources:

Technical Hotline

For more info call our technical hotline: 0800 689 8899, or e-mail: ukhotline@corteva.com